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Date:	Thu, 25 Mar 2010 15:43:07 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Jason Wessel <jason.wessel@...driver.com>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: Re: linux-next: build failure after merge of the kgdb tree

Hi Jason, Dmitry,

On Tue, 23 Mar 2010 15:04:43 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> After merging the kgdb tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
> 
> kernel/debug/kdb/kdb_main.c: In function 'kdb_sr':
> kernel/debug/kdb/kdb_main.c:1822: error: '__sysrq_enabled' undeclared (first use in this function)
> 
> Caused by commit ab28988df9667f8dd70c7434c8ca463beb00b300 ("kdb: core for
> kgdb back end (1 of 2)") from the kgdb tree interacting with commit
> edc6e384f9d96e54a6d03068d3b03fa5b56b6449 ("") fromInput: implement SysRq
> as a separate input handler the input tree.

I got this again today (I stopped reverting the input tree commits that I
was reverting for another build problem).  The patch below still seems to
work OK.

> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Date: Tue, 23 Mar 2010 14:45:22 +1100
> Subject: [PATCH] kgdb: update for sysrq handling change
> 
> Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
> ---
>  kernel/debug/kdb/kdb_main.c |    6 ++----
>  1 files changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
> index f1f9309..bad8e63 100644
> --- a/kernel/debug/kdb/kdb_main.c
> +++ b/kernel/debug/kdb/kdb_main.c
> @@ -1819,10 +1819,8 @@ static int kdb_sr(int argc, const char **argv)
>  {
>  	if (argc != 1)
>  		return KDB_ARGCOUNT;
> -	if (!__sysrq_enabled) {
> -		kdb_printf("Auto activating sysrq\n");
> -		__sysrq_enabled = 1;
> -	}
> +
> +	sysrq_toggle_support(1);
>  
>  	kdb_trap_printk++;
>  	handle_sysrq(*argv[1], NULL);

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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